WO2004043182A1

WO2004043182A1 - Reusable hair extension

Info

Publication number: WO2004043182A1
Application number: PCT/NL2003/000797
Authority: WO
Inventors: Richard Guliker; Walter Arkesteijn
Original assignee: Euro Hair Fashion B.V.
Priority date: 2002-11-12
Filing date: 2003-11-12
Publication date: 2004-05-27
Also published as: AU2003284834A1; NL1021900C1; EP1560504A1

Abstract

The improvement related to a reusable hair extension and a device for a desired hair model. The cost saving reuse of principally expensive hair bundles can be realized in a simple way. The new hair extension comprises a usual hair bundle provided with hair connection means for mutually connecting the hairs and a (hair) coupling element for a temporarily durable however eventually yet easily removable connecting with the basic hairs. The free end of the coupling element is provided with a specially shaped contact surface for connecting the coupling element with the basic hairs. This contact surface is applied to the free end of the coupling element by a preshaped contact surface element, formed from adhesive means (adhesive). The hair extension may be used as a special hair model means for obtaining a specially big voluminous hair dispersion to accrue the desired visual effect in hair volume while using a minimal number of hair bundles. The reusable hair extension or another known hair extension are embodiments for applying adhesive by means of a sheet-like hull made from aluminium foil.

Description

REUSABLE HAIR EXTENSION

The invention relates to a reusable hair extension and device and method for easily creating a desired hair model by which cost saving reuse of principally expensive hair bundles can also be realized in a simple way.

In modern hair fashion and hair cosmetics different solutions have been found for problems as how to fix known hair bundles of approximately 50 to 150 small hairs or such like to already existing hair upon the head of a person or an animal, hereafter to be called the basic hair.

A known method for preparation of hair extensions according to EP0876773 includes the positioning of an amount of thermoplastic melting glue to one free end of a hair bundle and subsequently remodelling it into a shell like C shaped coupling part by means of an appropriate device. Coupling to the basic hair takes place by positioning of the mentioned C shaped coupling part to the desired position respectively by pressing it together with the basic hair by the application of heat. Thermoplastic melting glue will so melt together with the basic hair, and after a certain cooling-off period a connection between them will be obtained. Removal of the so bonded hair extension leads to its destruction making repositioning impossible resulting in extremely high costs for the user. Another known hair extension system for interconnecting a hair bundle with the basic hair comprises, according to WO96/14767, the attachment of a hair bundle and a so called shrink sleeve of resin. Heating of the shrink sleeve that is put on a button made of basic hair, takes place subsequently by means of an appropriate device. After shrinking of the shrink sleeve a permanent interconnection between hair bundle and the basic hair will develop, after which any repair respectively reuse of the hair bundle is not possible anymore. Neither both mentioned methods, nor all other known methods of hair extension offer a solution for reusing said hair bundles.

Further by any of the known methods a larger visual hair volume effect is achieved, in all cases then a relatively high number of hair bundles has to be used per customer. Another disadvantage of the known method is caused by the fact that, unless a "button system" is used, a complete close interconnection with the basic hair can never be guaranteed, resulting in a high risk for always loosing small hairs out of the hair bundle. Attaching adhesion means in the right quantity respectively in the right shape at the position of an interconnection creates another weak aspect of all known systems, resulting in extreme labour intensity and user-unfriendliness which again results in high costs for a treatment.

In addition the inappropriateness of the existing hair bundles for being fabricated in a serial production as a ready to be used (prefab) hair extension, creates again another important obstacle.

By using the special construction of the new reusable hair extension, as well by applying the device and method for its reuse, the abovementioned problems have been eliminated now. A reusable hair extension according to the invention comprises the following essential parts: a) a hair bundle with a number of hairs (e.g. usually 50-150 pieces), which hair bundle at a certain distance of its free end is provided with hair connection means, such as e.g. in case of artificial hair, for bundling (binding) of the hairs in a compact unit, which hair bundle furthermore is provided with b) a (hair) coupling element for temporarily durable however eventually yet easily removable connecting with the basic hair; which coupling element is at its one free end provided with (a layer of) adhesion means in order to interconnect the coupling element with the basic hair.

Moreover the reusable hair extension according to the invention may be provided with special hair modelling means for obtaining specially big voluminous hair dispersion to accrue the desired visual effect in hair volume while using a minimal number of hair bundles. These hair modelling means have a diverging shape, such as e.g. like a trumpet neck, drop shaped, 2D or 3D conical or otherwise, are made of a shape retaining silicone or the like and further these are attached to the hair bundle in the immediate proximity of the hair connection means. Furthermore the said coupling element may be integrated with the hair bundle but it may be placed modularly as well. In an integrated position the small hairs of the hair bundle taper from the immediate proximity of the abovementioned hair connection means to its free end in a specially shaped contact surface being provided with an adhesion means, such as e.g. melting glue, for interconnection with the basic hair.

In the modular position the coupling element includes at the one hand an oblong corps made of relatively lightweight material, e.g. of resin or of textile and on the other hand the means to couple them mechanically with said hair bundle. Hereby one may think of a hair bundle provided with a mechanical adapter that is first taken away, after which the short loose coupling element may be removed / or eventually even be thrown away.

The free end of the hair bundle is furthermore provided with a coupling element provided with a contact surface for temporarily durable however eventually yet easily removable connection with the basic hair (not shown) by means of an adhesion means. Within the scope of the invention on the one hand is thought of a contact surface that is made of a relatively lightweight shape retaining material, such as e.g. resin, with attached thereupon the adhesion means. In another version this contact surface may be shaped respectively made by means of attaching to the one free end of the coupling element a preshaped, whether or not preheated, contact surface element, that is made as adhesion means. The purpose of this setting up, for both of abovementioned options, is to enclose the basic hair completely with the adhesive acting contact surface. As a result of this the risk of peeling off of the basic hair at the position of its interconnection with the hair extension may practically be excluded now. Said contact surface of the coupling element may in a cross section according to the invention be shaped as a (positive) star profile, or a tube profile at its interior provided with a (negative) star profile, or a C, I, L, U profile or the like, whether or not provided of interior or exterior ribs.

According to the invention and in order to attach the reusable hair extension to the basic hair, the device includes the following parts: a) a couple of handgrips interconnected by means of a pivoting connection, which handgrips at the free end at the other side of the pivot continue in b) a couple of claws comprising an upper claw and a lower claw, each being provided with shaping means to bring the free end of the coupling element in the desired shape. In a certain version one claw of the couple of claws may be provided with heating means that by means of a conventional electrical resistance, or an ultrasonic or HF method can supply heat to the adhesion means of the coupling element.

Placing of the reusable hair extension while making use of the device, takes place by: a) the positioning of the particularly shaped contact surface upon the desired position upon the basic hair, in consequence thereof b) placement of the lower claw and upper claw respectively of the device according to claim 11 at the upper side and lower side respectively of the contact surface of the reusable hair extension and afterwards c) pressing together the upper and lower claw of the said device and thereafter d) the warming up of the contact surface causing the adhesion means to mix up with the free end of the basic hair and consequently e) allowing a cooling-off period causing the molten adhesion means to become fully interconnected into a compact unit with the reusable hair extension. Cooling down of the adhesion means can take place e.g. beyond the claws of the said device in the environmental air or by means of an intensively (forced) cooling down regime, e.g. in water. In the event an ultrasonic or a HF method is applied for, cooling down of the adhesion means at the interior of the closed claws can take place at the interior of the closed claws. Different methods for making the hair extension reusable according to the invention will be clarified hereinafter

In another version renewed use of the hair extension takes place by means of attaching upon the coupling element of a sheet-like hull that is (locally) provided with a prefixed quantity of adhesion means, e.g. positioned upon so called adhesive pads. The sheet-like hull can be made of a good heat conductive, thin and flexible material, such as e.g. aluminium foil, at the side of the adhesion means being provided with an anti-adhesion layer for easily removing the hull after the adhesion means is positioned upon the coupling element.

The device, as described before, for attaching of the reusable hair extension according to the invention can be used for this purpose as well. In this case the lower claw of this device can be provided with a round or square or otherwise shaped recess and furthermore the sheet-like hull can be provided with a recess fitting upon this protrusion.

The invention further comprises a method for making renewed use of the reusable hair extension while using the sheet-like hull as well as said device, the method comprising the following actions: a) to locate the recess of the said hull, provided with adhesive and mounted e.g. upon so called adhesive pads, upon the protrusion of the said device, to prevent an undesirable displacement (shift) of the reusable hair extension to be attached, the shorter free end of the hull being located behind the protrusion of the device: b) positioning the free end of the coupling device of the reusable hair extension upon the lower side of the hull and lower claw of the device; thereafter c) pressing together the upper and lower claw causing the adhesion means, to become mixed up with the free end of the coupling element thereby creating a novel contact surface; thereafter d) opening up of the device and remove the reusable hair extension there from e) to remove the sheet-like hull from the reusable hair extension by means of simple opening up (peeling away).

To make a reusable hair extension, (again) usable, in other words the reapplication of an adhesion means, and also the shaping of the particularly shaped contact surface, can also be done without using the sheet-like hull. An extrusion method, injection moulding or (conventionally) pressure method may be used therewith.

Preferably, according to the invention, the method for deposing adhesion means to the reusable hair extension by means of an extrusion method comprises: a) locating the shorter free end of the reusable hair extension (on the side of the hair connecting means) in a positioned massive mould which is provided of an interior star profile, or a C, I, L, U profile or the like, whether or not provided with interior or exterior ribs; b) extrusion of the molten adhesion means in said mould and thereafter c) allowing a cooling down period causing the connection of the reusable hair extension with adhesion means to become a compact unit creating the desired contact surface and afterwards d) removing the cooled down reusable hair extension from the mould.

Preferably, according to the invention, the method for depositing the adhesion means to the reusable hair extension by means of an extrusion method, comprises: a) depositing the shorter free end of the reusable hair extension (at the side of the hair connection means) in a lower part of a mould, which mould is provided with an interior star profile, or a C, I, L, U profile or the like, whether or not provided with interior or exterior ribs, than b) enclosing the shorter free end of the reusable hair extension by a closing, part of said mould and thereafter c) injecting of a preferably preheated quantity of molten adhesive in said mould by means of an injector, thereafter d) allowing a cooling down period to unite the reusable hair extension and the adhesion means to a compact unit and eventually e) to remove the cooled down reusable hair extension from the mould.

Preferably, according to the invention, the method for depositing adhesion means to the reusable hair extension by means of a pressure method, comprises: a) depositing the shorter free end of the reusable hair extension (at the side of the hair connection means) upon an appropriate piece of molten adhesive, preferably shaped as a foil, respectively enclose the free end of the reusable hair extension therewith and consequently b) placing it in a pressure mould, whether or not preheated and thereafter c) closing the mould causing the required pressure to fluidize the molten adhesive for complete integration of the hairs at the shorter free end of the reusable hair extension with the molten adhesive; d) removing the cooled down reusable hair extension from the pressure mould To make another known hair extension usable, in other words the application of an adhesion piece produced from an in advance determined amount of adhesion means, preshaped or not, and also its shaping for obtaining a contact surface at its free end by application of one of the above mentioned methods, also falls within the scope of the invention.

De invention will now be described by means of an amount of embodiments with help of the drawing.

Fig. 1 shows a known hair extension according to EP 0876773;

Fig. 2 shows another known hair extension according to WO96/14767;

Fig. 3 shows schematically a known hair extension;

Fig. 4 shows schematically a reusable hair extension according to the invention;

Fig. 5 shows schematically another reusable hair extension according to the invention; Fig. 6 shows an enlarged detail of the hair connection means of a reusable hair extension according to the invention;

Fig. 7 shows a frontal view of a specially shaped contact surface of the coupling element of a reusable hair extension according to the invention;

Fig. 8 shows a frontal view of a particularly shaped contact surface of the coupling element of a reusable hair extension according to the invention;

Fig. 9 shows a side view of hair connection means and also the coupling element of a reusable hair extension according to the invention;

Fig.10 shows a perspective view of the mould for obtaining the desired shape of a particularly shaped contact surface of the coupling element of a reusable hair extension according to the invention;

Fig.11 shows an exploded view of coupling element of a hair extension according to the invention;

Fig.12 shows an exploded view of the hair extension (hair bundle) provided with a mechanical adapter; Fig.l 3 shows a top view of an amount of pre-fabricated sheet-like hulls;

Fig.14 shows a top view of an amount of "ready for use" sheet-like hulls; Fig.15 shows schematically a pair of claws of the device for making a hair extension reusable according to the invention;

Fig.16 shows a side view of an amount of half- fabricated hair extension according to the invention and Fig.17 shows a side view of a ready-to-use hair extension according to the invention.

A known hair extension 1 is according to EP 0876773, as shown in Fig. 1, provided with a shell-like C-shaped coupling element 2 with thereon mounted thermo plastic molten adhesive for connection with basic hair (not shown). The connection to the basic hair (not shown) is done by applying a C-shaped coupling element 2 on the appropriate position or by pressing together with the basic hair (not shown) by applying heat, respectively. The thermo plastic molten adhesive of the shell-like C-shaped coupling element 2 will melt together with the basic hair (not shown) and subsequently, after cooling down, a connection is obtained between them. The removal of the hair extension 1 connected with this method leads to falling apart of the hairs thereby making reapplication impossible.

Another known hair extension system 5 according to WO96/14767, as shown in Fig. 2, includes the arrangement of a hair bundle 8 and a so called shrink sleeve 6 of resin to the basic hair 4 of the skull 3. Heating of the shrink sleeve 6 which is placed over a button 7 of the basic hair 4 is further realized by means of an appropriate device (not shown). After shrinking of the shrink sleeve 6 takes place a new permanent connection is created between the hair bundle 8 and the basic hair 4. A possible reuse of the hair bundle 8 is also impossible since the removal of the shrink sleeve 6 causes an irreparable damage to the hair bundle 8.

According to Fig. 3, a known hair extension 1 comprises a hair bundle provided at its free end 10 with adhesion means 11. These adhesion means 11, e.g. thermoplastic melting glue, are shape-retaining at room temperature, allowing the free end 10 of hair bundle 9 to be brought in the desired shape (an example is the shell shaped C-shape, previously shown in Fig. 1). The disadvantageous vulnerability of this position, that is to say, the falling apart of the hair bundle after its use, is overcome by the new reusable hair extension 15 according to the invention by means of the measures shown in Fig. 4. Upon a certain distance from the free end 10 of the hair bundle 9 the hair connection means 12 for bundling (bonding) the hairs of the hair bundle 9 constitute a compact unit. If a hair bundle

9 consists of artificial hair than these hairs may in another embodiment (not shown here) be interconnected by melting together causing the hairs to be welded together. The free end

10 of the hair bundle 9 is further provided with a coupling element 13 having a contact surface for temporarily durably however eventually easily removable bonding with the basic hair (not shown) by means of an adhesion means.

According to Fig. 5 reusable hair extension 15 is provided with hair modelling means 14, attached to the hair bundle 9' in the immediate proximity of the hair connection means 12 to achieve voluminous hair dispersion for increasing the desired visual hair volume aspect. These hair modelling means 14 are shaped divergently, e.g. as a trumpet neck, drop shaped, 2D or 3D conically or otherwise, made from a shape retaining silicone or the like. In the embodiment of Fig. 6, the hair modelling means 14 are shaped like a (3D) trumpet neck 16, made from resin, in such a way to achieve also the function of the hair connection means 12 for the interbonding of the airs.of the hair bundle 9'. According to Fig. 7 (front view) and Fig. 8 (upper view) there is provided to the free end 10 of the reusable hair extension 15 a coupling element 13 which provides for a specially shaped contact surface for temporarily durable however eventually yet easily removable bonding of the basic hair (not shown) by means of an adhesion means which is also shape retaining for the coupling element 13. Its contact surface 13 is here particularly shaped as a divergent C-profile 17 interiorly provided with a number of ribs 18 to increase the effective contact surface between the basic hair (not shown) and the coupling element 13. As a result a better adhesion effect is achieved compared with the other known hair extensions (see e.g. Fig. 1). In the embodiment of Fig. 9 the reusable hair extension is provided with mutually integrated hair modelling means 14 and hair connection means 12, both arranged in a (3D) trumpet neck piece 16 made of resin ( in analogy with Fig. 6). Furthermore the free end 10 of the coupling element 13 is provided with a cylindrical adhesion piece 13' that in a cross section is shaped as a star profilel9 and further comprises a number of elongated prismatic ribs 20. Cylindrical adhesion piece 13' may be manufactured in different ways while applying a so called extrusion method, injection moulding or (conventionally) pressure method. In these cases basically a mould 21 may be used according to Fig. 10 which interiorly is provided e.g. of a cross-sectional (negative) star profile 19'and further interiorly provided of (negative) elongated prismatic ribs 20' to obtain a particular contact surface of the adhesion piece 13' according to Fig. 9. The mould 21 consists of two portions: one upper portion 22a and a lower portion 22b, whereby each one or both of the portions 22a, 22 are movable in the extrusion, injection moulding or (conventional) pressure device. As a result the arrangement of the free end 10 of the coupling element 13, respectively the removal of the adhesion piece 13' into and from the mould 21 respectively may be obtained. In Figs. 11 and 12 an embodiment of a modular hair extension 15" is shown according to the invention. According to Fig. 12 a modularly built reusable hair extension 15" comprises the mutually integrated hair modelling means 14 and hair connection means 12, brought together in a (3D) trumpet neck piece 16 made of resin ( in analogy with Fig. 6 and 9). Furthermore the upper side of trumpet neck piece 16 includes a mechanical female adapter 24 for positioning and connection with a mechanical male adapter 23 of the adhesion piece 13 'according to Fig. 11. Further the coupling element 13 comprises an elongated body 25 made of relatively lightweight material, e.g. of resin or textile.

In an embodiment for renewed deposition of adhesion means upon the reusable hair extension according to the invention such may be achieved by means of a sheet-like hull. This piece 26, shown in Fig. 13 is made of aluminium foil and it is provided with three couples of rectangular cavities 28 and also of three couples of rectangularly arranged glue pads 29, that is to say, locally positioned determined quantities of adhesion means. This piece 26 will consequently be folded along its centre line so that the three couples of rectangular cavities 28 and three couples of rectangularly arranged glue pads 29 fit one above the other. In Fig. 14 is the situation shown wherein the said folded piece 26 is cut into three ready-to-use sheet-like hulls 26. Rectangular cavities 28 are visible here. Immediately before use, that is to say to prepare (re)use of the reusable hair extension (not shown) this sheet-like hull 26 is opened and placed upon an appropriate device, partially shown in Fig. 15.

According to Fig. 15 a set of claws 30, 31 of a device (not shown) in use for the attachment to the basic hair of a reusable hair extension (not shown) is shown here in its open position. In this respect this could be a device (like a pair of scissors or pliers e.g. provided with a couple of handgrips (not shown), which handgrips are continued at the other side of the pivotal connection at the free end in a set of claws. These comprise an upper claw 30 and a lower claw 31 which are both provided with shape designing means 33, 34 in order to bring the free end of the coupling element (not shown) in the desired shape, while, whether or not, applying heat. In this embodiment the lower claw 31 is provided with a protrusion, in an upper view being rectangular, corresponding to the recess of the sheet-like hull according to Fig. 14. Furthermore the upper claw 30 is also provided with a co-positioning recess for guidance of the lower claw 31 in the event that a sheet-like hull (not shown) is positioned in the opened position respectively if a coupling element (not shown) is located therein during the closing and pressing together of said device. The sheet-like hull (not shown) serves the purposes, at the one hand to preserve the newly created desired shape of the free end of the coupling element and at the other hand for carrying heat away in the event it has been applied for. The result is shown in Fig. 16 where a reusable hair extension is now provided with a new adhesion means by means of said glue pads and wherein the coupling element (not visible) is completely enclosed by the sheet-like hull 27 for its . protection. Fig. 17 shows at a full scale a reusable hair extension 15 just before its attachment to the basic hair (not shown). The (protective) sheet-like hull has been removed here making the elements of a reusable hair extension 15 according to the invention visible: hair modelling means 14 are deposed on the hair bundle 9 in the immediate proximity of the hair connection means 12 and the coupling element 13 provided with a shape giving adhesion means for the contact surface.

It may be clear that while remaining within the scope of the invention, many other embodiments will be possible.

Claims

1. Reusable hair extension for repeated fixation to an appropriate number of basic hairs, including: a) at least one bundle of hairs made from natural hair or artificial hair, which bundle being provided on a distance from its free end with hair connection means, such as e.g. natural hair or of a close connection obtained e.g. by (fusion)melting together such as e.g. artificial hair, for bundling (binding) of the hairs in a compact piece, which hair bundle furthermore is provided with b) at least a (hair) coupling element, provided at its free end with a contact surface for temporarily durable however eventually yet easily removable connecting with and/or repositioning to the basic hairs by means of a usual adhesion means.

2. Reusable hair extension according to claim 1, hair modelling means being provided to the hair bundle in the immediate proximity of the hair connection means for obtaining voluminous hair dispersion to accrue the desired visual effect in hair volume.

3. Reusable hair extension according to claim 1 or 2, characterized in that hair connection means for connecting the hairs in a bundle comprise a compact either convex or concave shaped quantity of resinous material, such as e.g. silicone.

4. Reusable hair extension according to claims 1 or 2, characterized in that the hair connection means for interconnection of the hairs in a hair bundle comprise a button, made of an appropriate material, e.g. natural hair, artificial hair, textile or resin, whether or not provided with a friction decreasing and/or protective layer of silicones or the like.

5. Reusable hair extension according to claim 2, characterized in that the hair modelling means are made of a shape retaining silicone and furthermore are shaped in a diverging shape such as e.g. like a trumpet neck, drop shape, 2D or 3D conical or otherwise, in such a way, that a desired visual voluminous effect is obtained while using a minimum number of hair bundles.

6. Reusable hair extension according to claim 1, characterized in that the coupling element is modularly positioned, that is to say, it is a simple interexchangeable object, comprising an oblong corps, made of a relatively lightweight material, e.g. from resin or textile, in which the free end is provided of an interconnection means with adhesion means, such as e.g. melting glue, for the interconnection with the basic hairs and at its other free end being provided with the means to become interconnected mechanically with said hair bundle, such as e.g. these means may be quickly and simply be released from the coupling element.

7. Reusable hair extension according to any of the foregoing claims 1-3, characterized in that the coupling element is provided at its one free end of a contact surface made of a relatively lightweight shape retaining material, such as e.g. resin, having attached thereupon adhesion means, which contact surface in a cross section is shaped as a (positive) star profile, or a tube profile internally provided with a (negative) star profile, a straight and/or a divergently shaped C, I, L, U profile or the like, whether or not provided of interior or exterior ribs for increasing the said contact surface as well as for improvement of the spread of the basic hair at the location of its connection to the coupling element.

8. Reusable hair extension according to any of the foregoing claims 1-8, characterized in that the coupling element at its free end is provided with a contact surface of particular shape having been shaped or made respectively by means of .providing at its one free end of the coupling element a preshaped, whether or not preheated, contact surface element which is made from the adhesion means itself and furthermore in a cross section is shaped as a (positive) star profile, or as a tube shaped profile at its interior provided with a (negative) star profile, a straight or divergently shaped C, I, L, U profile or the like, whether or not provided with interior or exterior ribs for increasing the said contact surface as well as for improvement of the spread of the basic hair at the location of its connection to the coupling element.

9. Reusable hair extension according to any of the foregoing claims 1-8, characterized in that it is provided with a sheet-like hull for at least partially holding the said hair bundle with the coupling element, made from a good heat conductive, thin and flexible material, such as e.g. aluminium foil.

10. Reusable hair extension according to any of the foregoing claims 1-9, characterized in that the sheet-like hull is provided with a round, square or otherwise shaped recess and furthermore whether or not provided of an anti-adhesion layer for easy removal of the coupling element after deposition of the adhesion means.

11. Device for attaching a reusable hair extension according to claim 5 to the basic hair, comprising: a) a couple of handgrips interconnected by means of a pivoting connection, which handgrips at the free end at the other side of the pivot continue in b) a couple of claws comprising an upper claw and a lower claw, each being provided with shaping means to bring the free end of the coupling element in the desired shape.

12. Device according to claim 10, characterized in that at least one claw of the couple of claws is provided with heating means, while using an appropriate method, such as e.g. by means of a conventional electrical resistance heating, an ultrasonic or a HF method for the heating up of the adhesion means of the coupling element.

13. Method of placing a reusable hair extension according to claim 6 while making use of the device according to claim 11, comprising: a) the positioning of the particularly shaped contact surface upon the desired position upon the basic hair, in consequence thereof b) placement of the lower claw and upper claw respectively of the device according to claim 1 1 at the upper side and lower side respectively of the contact surface of the reusable hair extension and afterwards c) pressing together the upper and lower claw of the said device and thereafter d) the warming up of the contact surface causing the adhesion means to mix up with the free end of the basic hair and consequently e) allowing a cooling-off period causing the molten adhesion means to become fully interconnected into a compact unit with the reusable hair extension.

14. Method according to claim 12, characterized in that cooling down of the adhesion means takes place beyond the claws of the said device in the environmental air or by means of an intensively (forced) cooling down regime, e.g. in water.

15. Method according to claim 12, characterized in that cooling down of the adhesion means takes place at the interior of the closed claws of the device in the event an ultrasonic or a HF method is applied for.

16. Device according to claim 10, characterized in that the lower claw is provided with a round or square or otherwise shaped protrusion corresponding to the recess of the sheetlike hull according to claim 9 in order to prevent an undesirable displacement (shift) of the reusable hair extension during its attachment.

17. Sheet-like hull applicable for renewed making use of the reusable hair extension according to claims 1-9, made from a good heat conductive, thin and flexible material, such as e.g. aluminium foil and further provided with a round or square or otherwise shaped recess corresponding to the protrusion of the device according to claim 16 and further at least locally provided with adhesion means, e.g. positioned upon so called adhesive pads, for deposing and creating the new particularly shaped contact surface of the coupling element of the reusable hair extension.

18. Method for the preparation of the reusable hair extension according to claims 1-9 while using at the one hand a sheet-like hull for at least partially hulling the said hair bundle with the coupling element and at the other side using the device according to claim 16, comprising: f) to locate the recess of the said hull upon the protrusion of the said device, the shorter free end of the hull being located behind the protrusion of the device: g) positioning the free end of the coupling device of the reusable hair extension upon the lower side of the hull and lower claw of the device; thereafter h) pressing together the upper and lower claw causing the adhesion means, provided e.g. upon so called adhesive pads, to become mixed up with the free end of the coupling element thereby creating a novel contact surface; thereafter i) opening up of the device and remove the reusable hair extension there from j) to remove the sheet-like hull from the reusable hair extension by means of simple opening up (peeling away).

19. Method for deposing adhesion means to the reusable hair extension (making ready for use) according to claims 1-7, by means of an extrusion method comprising: a) locating the shorter free end of the reusable hair extension (on the side of the hair connecting means) in a positioned massive mould which is provided of an interior star profile, or a C, I, L, U profile or the like, whether or not provided with interior or exterior ribs; b) extrusion of the molten adhesion means in said mould and thereafter c) allowing a cooling down period causing the connectionof the reusable hair extension with adhesion means to become a compact unit creating the desired contact surface and afterwards d) removing the cooled down reusable hair extension from the mould.

20. Method for depositing the adhesion means to the reusable hair extension (making it usable) according to claims 1-7, by means of an extrusion method, comprising: a) depositing the shorter free end of the reusable hair extension (at the side of the hair connection means) in a lower part of a mould, which mould is provided with an interior star profile, or a C, I, L, U profile or the like, whether or not provided with interior or exterior ribs, than b) enclosing the shorter free end of the reusable hair extension by a closing part of said mould and thereafter c) injecting of a preferably preheated quantity of molten adhesive in said mould by means of an injector, thereafter d) allowing a cooling down period to unite the reusable hair extension and the adhesion means to a compact unit and eventually e) to remove the cooled down reusable hair extension from the mould.

21. Method for depositing adhesion means to the reusable hair extension (making it usable) according to claims 1-7, by means of a pressure method, comprising: a) depositing the shorter free end of the reusable hair extension (at the side of the hair connection means) upon an appropriate piece of molten adhesive, preferably shaped as a foil, respectively enclose the free end of the reusable hair extension therewith and consequently b) placing it in a pressure mould, whether or not preheated and thereafter c) closing the mould causing the required pressure to fluidize the molten adhesive for complete integration of the hairs at the shorter free end of the reusable hair extension with the molten adhesive; d) removing the cooled down reusable hair extension from the pressure mould.

22. Method for attaching an adhesion piece, made from a previously determined quantity of adhesion means, whether or not preshaped, to a usual hair extension while applying one or more of the foregoing claims 18-21.